Laser welding of sandwich structures

Details Laser welding of sandwich structures Laser welding of sandwich structures

1983-11-21

1986-07-29

Ramsey, Kenneth J.

Stock material or miscellaneous articles

All metal or with adjacent metals

Honeycomb, or with grain orientation or elongated elements...

228118, 228157, 219121LD, 219121LA, 428594, B23K 2618, B23K 3102

Patent

active

046030891

ABSTRACT:
A process is disclosed for bonding multi-layer sheet structure by using controlled depth laser welding. The laser energy may be applied in stages, whereby the inner sheets are first welded together and, the outer sheets are then joined thereto. The sheets are thereafter expanded to form the desired structure. Although the laser energy may be varied to control the depth of penetration, one embodiment utilizes a shield material to be applied between two sheets to prevent the laser energy from penetrating and joining the two sheets together. Similarly, shields may be used to control the width of the laser weld.

REFERENCES:
patent: 3111747 (1963-11-01), Johnson
patent: 3112559 (1963-12-01), Pauls
patent: 3214949 (1965-11-01), Johnson
patent: 3949186 (1976-04-01), Nakayama
patent: 4295255 (1981-10-01), Weber
patent: 4304821 (1981-12-01), Hayase et al.
patent: 4361262 (1982-11-01), Israeli
patent: 4379219 (1983-04-01), Behrens et al.

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